Editing Distillation (section)

===Vacuum distillation===
{{Main|Vacuum distillation}}
Some compounds have very high boiling points. To boil such compounds, it is often better to lower the pressure at which such compounds are boiled instead of increasing the temperature. Once the pressure is lowered to the vapor pressure of the compound (at the given temperature), boiling and the rest of the distillation process can commence. This technique is referred to as vacuum distillation and it is commonly found in the laboratory in the form of the [[rotary evaporator]].

This technique is also very useful for compounds which boil beyond their [[decomposition temperature]] at atmospheric pressure and which would therefore be decomposed by any attempt to boil them under atmospheric pressure.